The Ewoks weren't Ewoks they were definitely midgets in teddy bear costumes, one of the side effects of the carbon freeze was apparently a new outlook on life because theres no way that was Han, and Luke must have been really drunk when he came up with that crazy elaborate rescue plan, but overall the story has a lot of heart, the actions great, and the climax through the end has some of the best moments in the saga. It's more flawed than Empire or the original but it's still a very good movie.

The thing is, I'm perfectly accepting of ROTJ Han because for one, he knew he loved Leia, and she risked her life to save him. The next part of that was that he no longer owed anything to Jabba. Other Hutts may come for him eventually, but like the fact the Empire isn't gone at the end of Jedi, its not something we have to worry about. So I don't see why any changes in Han's personality are too bad here.